I was a clinical chemist once upon a long time ago, so looking at this problem of quantification is a simple one, especially if you want to calculate it on paper. BTW I worked in the lab for 16 years using only a slide rule for my calculations before I bought the one of the first Bomar Brains to hit the streets.
All your densitometry measurements are nothing more than Voodo at best, slide rules and all. The only way to know exactly how much pure silver is in any emulsion is do an actual extraction of the silver itself... right off the undeveloped film or paper.
So what was the original question again?
""I'm about to experiment further with film, paper, and fixer.
Is there any solid information, whatever the source, on the
quantity of silver in the gelatins of film and paper? Dan"" as quoted from the APUG thread.
And where does all this desitometry nonsense come into this conversation again? So you can cerebralize this all you want, but you missed the point. OTOH I'm impressed as all hell with the amount of information in this conversation.
All your densitometry measurements are nothing more than Voodo at best, slide rules and all. The only way to know exactly how much pure silver is in any emulsion is do an actual extraction of the silver itself... right off the undeveloped film or paper.
So what was the original question again?
""I'm about to experiment further with film, paper, and fixer.
Is there any solid information, whatever the source, on the
quantity of silver in the gelatins of film and paper? Dan"" as quoted from the APUG thread.
And where does all this desitometry nonsense come into this conversation again? So you can cerebralize this all you want, but you missed the point. OTOH I'm impressed as all hell with the amount of information in this conversation.